A suspect was taken into custody about 10 minutes after authorities found Jayme, the sheriff's office said.

No more details were immediately available but authorities have said they will hold a news conference Friday morning.

Jayme's aunt, Sue Allard, said her niece was in the hospital Thursday night.

"There was rumors earlier today, and I prayed and prayed, and they come to not be true," Allard told CNN affiliate WCCO reporter Mary McGuire. "And I just shut myself totally down. I thought today was going to be the day, and then I find out two hours later that she's found and I just cannot believe this."

Jayme vanished October 15, and her parents, James and Denise Closs, were found fatally shot in their home near Barron, a town of 3,300 in northwestern Wisconsin.

Investigators say a mysterious 911 call led deputies to discover the bodies. The call was "pinged" to the Closs home. When the dispatcher called the number back, a voice mail greeting indicated the phone belonged to Denise Closs. The log does not indicate who made the 911 call, but the dispatcher heard yelling in the background.

Police arrived to find the door kicked in but no one was there. Investigators said they believed Jayme was at home during the shooting.

"Finally we want to especially thank the family for their support and patience while this case was ongoing. We promised to bring Jayme home and tonight we get to fulfill that promise. From the bottom of my heart THANK YOU!" Barron County Sheriff Chris Fitzgerald said in a statement.

"This case has been very trying on the family so please respect their privacy and we reunite them later tonight."

Thousands of people joined search parties for months as investigators received thousands of tips. The FBI offered a cash reward for information on her whereabouts and hunters in the area were also urged to be on the lookout for clues.

In December, the Barron County Clerk of Courts Office dedicated its Christmas tree to her. The decorations spelled out Jayme's name in big, glittery letters, and they included green bulbs and ribbons. The color green is often used to raise awareness for missing children.

In the days after Jayme's disappearance, law enforcement officials assured the public they believed she was alive and in danger.

Another of Jayme's aunts, Jennifer Smith, pleaded with those who knew where the girl was to contact the sheriff's department.

"Jayme, we need you here with us to fill that hole we have in our hearts," Smith said more than a week after the girl went missing. "We all love you to the moon and back. And we will never stop looking for you."